diff --git a/ChangeLog.md b/ChangeLog.md
new file mode 100644
--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,5 @@
+# Revision history for string-interpreter
+
+## 0.1.0.0 -- 2021-08-16
+
+* First version. Released on an unsuspecting world.
diff --git a/Interpreter/StringConversion.hs b/Interpreter/StringConversion.hs
new file mode 100644
--- /dev/null
+++ b/Interpreter/StringConversion.hs
@@ -0,0 +1,37 @@
+{-# OPTIONS_HADDOCK show-extensions #-}
+
+-- |
+-- Module      :  Interpreter.StringConversion
+-- Copyright   :  (c) OleksandrZhabenko 2021
+-- License     :  MIT
+-- Stability   :  Experimental
+-- Maintainer  :  olexandr543@yahoo.com
+--
+-- A library that has commonly used function for the phonetic-languages implementations.
+
+module Interpreter.StringConversion where
+
+import Text.Read (readMaybe)
+import Data.Maybe
+import Data.Char (isDigit)
+import Data.List (sort,nub,intercalate,(\\))
+import Data.Monoid (mappend)
+
+convStringInterpreter :: String -> String -> String
+convStringInterpreter contrs xs
+ | null contrs = xs
+ | length (nub . filter (\t -> t >= '1' && [t] <= show (length . words $ xs)) $ contrs) < 2 = xs
+ | otherwise = let cntrs = nub . filter (\t -> t >= '1' && [t] <= show (length . words $ xs)) $ contrs
+                   tss = words xs in
+                     case length cntrs of
+                      2 -> let pos = fromJust (readMaybe (take 1 cntrs)::Maybe Int)
+                               number = fromJust (readMaybe (drop 1 cntrs)::Maybe Int)
+                               (zss,yss) = splitAt (pos - 1) tss
+                               (kss,lss) = splitAt number yss in
+                                 if length tss < pos + number - 1 then xs
+                                 else if null zss then concat kss `mappend` " " `mappend` intercalate " " lss
+                                      else intercalate " " zss `mappend` " " `mappend` concat kss `mappend` " " `mappend` intercalate " " lss
+                      _ -> let idxs = map (\x -> fromJust (readMaybe [x]::Maybe Int)) $ cntrs
+                               wordsN = map (\i -> tss !! (i - 1)) idxs
+                               restWords = tss \\ wordsN
+                                 in intercalate " " restWords `mappend` " " `mappend` concat wordsN
diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2021 OleksandrZhabenko
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/string-interpreter.cabal b/string-interpreter.cabal
new file mode 100644
--- /dev/null
+++ b/string-interpreter.cabal
@@ -0,0 +1,25 @@
+-- Initial string-interpreter.cabal generated by cabal init.  For further
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                string-interpreter
+version:             0.1.0.0
+synopsis:            A library that has commonly used function for the phonetic-languages implementations
+description:         Provides a way to use recersive interactive mode.
+homepage:            https://hackage.haskell.org/package/string-interpreter
+license:             MIT
+license-file:        LICENSE
+author:              OleksandrZhabenko
+maintainer:          olexandr543@yahoo.com
+copyright:           OleksandrZhabenko
+category:            Language
+build-type:          Simple
+extra-source-files:  ChangeLog.md
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     Interpreter.StringConversion
+  -- other-modules:
+  -- other-extensions:
+  build-depends:       base >=4.8 && <4.16
+  -- hs-source-dirs:
+  default-language:    Haskell2010